28290280

素因数分解:

$2^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{4339}}^1$

素因数の和:4513

約数の個数: 32

約数和(自身を含む): 64058400

約数和(自身を除く): 35768120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 163, 326, 652, 815, 1304, 1630, 3260, 4339, 6520, 8678, 17356, 21695, 34712, 43390, 86780, 173560, 707257, 1414514, 2829028, 3536285, 5658056, 7072570, 14145140, 28290280]

約数ペア:

[(1, 28290280), (2, 14145140), (4, 7072570), (5, 5658056), (8, 3536285), (10, 2829028), (20, 1414514), (40, 707257), (163, 173560), (326, 86780), (652, 43390), (815, 34712), (1304, 21695), (1630, 17356), (3260, 8678), (4339, 6520)]